Brown Bears of Katmai

At left, a glacier, still covered in ash from the 1912 Novarupta eruption, which had the force of 50 Mt. St. Helens eruptions and released over six cubic miles of ash, covering 40 square miles of the "Valley of Ten Thousand Smokes" at right with ash up to 700 feet deep. It also reduced the peak of Mount Katmai from a height of roughly 12,000 ft to roughly half that!